It is helpful to look at the default attribute set first to see the attributes an extension has installed under the Shipping tab. This will help you to see what is required for other attribute sets.

Adding Extension Attributes to your Attribute Sets

If you have more than the one attribute set you will may to amend these sets to have the new group included with its associated attributes. See the default attribute set for how it is setup and replicate this in other attribute sets.

If the attribute has already been assigned to each set, then move on to Attributes below to configure the way you need them.

Navigate to Attributes in Catalog->Attributes->Manage Attribute Sets

Click on the Default set

You should see the new attribute assignment from our extension

Remember this as you open a new window and go to Attribute Sets again

Go to the other sets you may have and assign in the same way

Example shown below

After creation you will see your Shipping tab in the product listing like below:

Setting Attribute Values

Some of the attributes such as Shipping Group are drop down boxes. The values for these need to be defined first before they can be assigned to products in the product listing:

Navigate to Attributes in Catalog->Attributes->Manage Attributes

Open the the relevant attribute for your extension. Note: If you cannot find the attribute remember there may be multiple pages (alphabetically ordered).

Click on Manage Label/Options

Use Add option to add all the attributes you require

Put the attribute name in admin field and leave default store view empty like below: